As Hollywood A-listers get set for the pre-Oscars build-up, Doritos is targeting amateur film-makers. The King of Ads on-pack push offers consumers the chance to star in a 30-second Doritos ad of their own making and win a cash prize of up to £200,000.

Shortlisted ads will air on Channel 4 in three-minute extended adverts in June, with the winner airing on national TV through June and July.